Stomach & Intestines Flashcards
The digestive system begins with the _______ and ends with the ________.
Oral cavity
Anus
List the tunics (coats) of the Gastrointestinal Tract from superficial to deep. (4 Layers)
Serous coat (visceral pericardium)
Muscular coat (longitudinal and circular layers)
Submucous coat
Mucous coat
What is the job of longitudinal and circular muscle layers in the muscular coat of the stomach?
Longitudinal- mix the contents
Circular- protect digesta cranially and or caudally
The _________ __________ allows contents from esophagus to move into the stomach and vice versa.
cardiac sphincter
The ________ region of the stomach easily expands depending on how much food is in the stomach. It is also toward the left side of the body.
Fundus
The _________ region of the stomach is toward the right side in the body.
Pylorus
Once the esophagus passes the esophageal hiatus, it is then referred to as what?
the abdominal esophagus
Where is the esophageal hiatus located in the diaphragm?
Between the right and left lumbar portions
What is the definition of vomit?
the involuntary forceful expulsion of content from stomach to the mouth
What is the connective tissue between the lesser curvature of the stomach and the liver?
The lesser omentum
What structures arise from the dorsal mesentery?
Dorsal mesogastrium (greater omentum)
Mesoduodenum
Mesojejunum
Mesoileum
Mesocolon
Mesorectum
What structures arise from the ventral mesentery?
Ventral Mesogastrium (lesser omentum)
Falciform ligament
Median ligament of the bladder
The greater omentum courses from where?
the dorsal body wall to the greater curvature of the stomach
The superficial layer of the greater omentum contains what organ?
the spleen
The deep leaf of the greater omentum contains what organ?
Left lobe of the pancreas
The first structure you will see when you ventrally open the peritoneum is what?
The omental bursa
List the parts of the duodenum (6 parts)
CrD: Cranial part
CrDF: cranial duodenal flexure
DeD: Descending part
CaDF: Caudal duodenal flexure
AsD: Ascending part
DJF: Duodenaljejunal flexure
What is the part of the perineum that holds the duodenum?
Meso-duodenum
What is the longest portion of the small intestine?
Jejunum
How do you differentiate the jejunum from the ilium?
The ilium has the antimesenteric ileal artery and the iloceccal fold
What are the three portions of the large intestine?
Cecum, colon and rectum
The cecum is defined by what?
double flexure with a blind sac
List the parts of the colon
Ascending colon
Right colic flexure
transverse colon
left colic flexure
descending colon
What is the term to describe the transition between the mucosal of the rectum and the skin of the anus?
Anocutaneous line
What kind of muscle comprises the external anal sphincter?
Skeletal muscle- voluntary movement
What kind of muscle comprises the internal anal sphincter?
Smooth muscle- involuntary movement
List the 9 topographical regions of the abdomen/
Right and left hypochondrium
Xiphoid (Epigastric)
Umbilical (Mesogastric)
Right and left flank
Right and left umbilical
Pubic (Hypogastric)
What structures are found in the Right Hypochondrium?
Right lobes of the liver
Stomach (Pylorus)
Right colic flexure
Right kidney
What structures are found in the left Hypochondrium?
Left lobes of the liver
Stomach (Fundus)
Spleen
Left colic flexure
Left kidney (Cranial pole)
What structures are found in the xiphoid region?
Liver/ gall bladder
stomach (body)
Transverse colon
Left lobe of the pancreas
What structures are found in the Right Flank?
descending duodenum
right lobe of the pancreas
jejunum
right ovary and uterine horn
ascending colon
cecum
ilium
What structures are found in the umbilical region?
Transverse colon
caudal duodenal flexure
jejunum
root of mesenterium
ventral end of spleen (variable)
Urinary Bladder (when it if full)
Left lobe of the pancreas
What structures are found in the left flank?
descending colon
left kidney (caudal pole)
spleen
jejunum
left ovary and uterine horn
What structures are found in the right inguinal region?
inguinal canal
spermatic cord (male)
vaginal process (female)
What structures are found in the pubic region?
urinary bladder
uterus (body/cervix)
descending colon/rectum
What structures are found in the left inguinal region?
inguinal canal
spermatic cord (male)
vaginal process (female)
